New Ni-Anthracene Complex for Selective and Sensitive Detection of 2,4,6-Trinitrophenol

Kumbam Lingeshwar Reddy,Venkata Krishnan,Anabathula Manoj Kumar,Abhimanew Dhir

doi:10.1155/2018/1321427

Kumbam Lingeshwar Reddy, Venkata Krishnan + Show 2 more

Open Access

https://doi.org/10.1155/2018/1321427

Copy DOI

Abstract

Selective and sensitive detection of explosive materials through a simple approach is an attractive area of research having implications on public safety and homeland security. Considering this implication in mind, a new Ni-anthracene complex was designed and synthesized and has been demonstrated as an efficient fluorescence chemosensor for the selective and sensitive detection of 2,4,6-trinitrophenol. Firstly, a fluorescent anthracene ligand (A) was synthesized by treating anthracene-9-carboxaldehyde with 1,3-diaminopropane in presence of a weak acid. To achieve superior selectivity and great quenching efficiency for 2,4,6-trinitrophenol (TNP), a Ni complex, namely, [Ni(μ2-L)(NO3)] (B), was synthesized via the reaction of A with Ni(NO3)2·6H2O. Complex B showed strong emission peak (λmax) at 412 nm and exhibited high selectivity towards TNP among other nitroaromatics and anions. 100 equivalents of TNP made 95% fluorescence quenching of B and its detection limit for TNP was calculated as 2.8 μM.

Highlights

Nitroaromatic compounds are generally used in many industries for the preparation of dyes, pharmaceuticals, rubber products, explosives, chemical fibres and pesticides, and so forth [1]
The as-synthesized complex was characterized by mass spectrometry, where the parent ion (m/z) peak appeared at 1082 corresponding to the species [2A⋅Ni(NO3)2]
The presence of all the elements in complex B is confirmed through elemental analysis

Summary

Introduction

Nitroaromatic compounds are generally used in many industries for the preparation of dyes, pharmaceuticals, rubber products, explosives, chemical fibres and pesticides, and so forth [1] These nitroaromatic compounds were released into the environment as industrial wastage and are one of the main reasons for the pollution. Due to their poisonousness, carcinogenicity to living beings, and the risk to homeland safety, they cause serious intimidations to our lives [2]. By considering the significance of the new photoluminescent material for TNP sensing, in this work, we synthesized a new anthracene based nickel complex with fluorescent activity for the detection of TNP. Solution phase spectral studies confirm the sensitivity of complex with TNP

Materials and Methods

Results and Discussion

Conclusions